Orianne Tournayre

@otournayre.bsky.social

Molecular ecologist studying the impact of human activities and climate anomalies on #biodiversity and #SpeciesInteractions using #eDNA in the air, water and feces🧬 (she/her) https://oriannetournayre.wixsite.com/website

New paper out in Molecular Ecology 🐟🧬 Led by Julien Beaulieu, we show environmental RNA (eRNA) can estimate freshwater fish biomass & abundance in the wild — outperforming eDNA. Mitochondrial eRNA tracked Brook Trout numbers best. First demonstration in natural lakes 👇 doi.org/10.1111/mec....

Title graphic over a reflective Rocky Mountain lake reading "Reading the water, in real time," with a subtitle on environmental RNA outperforming environmental DNA. A bar chart ranks four markers by how well they tracked fish biomass: eRNA cyt b scores highest at 0.59 (marked "best"), followed by eRNA 18S (0.32), eDNA cyt b (0.22), and eDNA 18S (0.10).

New paper out in New Phytologist 🌱 After centuries of research in Europe, we have studied only ~37% of all seed-dispersal interactions. Birds of prey, ants, and rodents are among the most understudied - yet researchers rarely flag them as gaps! nph.onlinelibrary.wiley.com/doi/10.1111/...

Neglected seed dispersers and research compartmentalisation: how much do we know about what we don't know?

Geographic distribution of seed dispersal studies by disperser guild.

nph.onlinelibrary.wiley.com

Un nouvel article que nous sortons avec de bons collègues: Les omics pour la gestion des milieux aquatiques : rencontre entre chercheurs, gestionnaires et analystes: Échanges de points de vue https://revue-set.fr/article/view/9937 #omics #metabarcoding #nature #lake #pollution #river #DNA

Les omics pour la gestion des milieux aquatiques : rencontre entre chercheurs, gestionnaires et analystes | Sciences Eaux & Territoires

revue-set.fr

🧬 My haplotype paper is out! We show that deviations between within-sample and population-level haplotype frequencies can be used to estimate how many individuals contributed to an eDNA sample. No tissue references needed, just metabarcoding data and some population genetics. #eDNA #PopGen

Estimating Organism Abundance Using Within‐Sample Haplotype Frequencies of eDNA Data

Environmental DNA (eDNA) provides powerful insights into species presence and community composition but remains limited in its capacity to infer species abundance or population structure. Here, we sh...

onlinelibrary.wiley.com

[ 📁 Dossier] Les savoirs écologiques au service de la santé 💊 À l’approche du One Health Summit, la FRB revient sur plusieurs articles éclairant différentes facettes de ce concept scientifique invitant à sortir des silos pour une approche systémique des questions de santé. bit.ly/4m3qz5S

Les savoirs écologiques au service de la santé - Fondation pour la recherche sur la biodiversité

Les savoirs écologiques “biodiversitaires” sont importants pour prévenir les conséquences en cascade de la perte de services écosystémiques et rendre les sociétés humaines, les écosystèmes et les espè...

bit.ly